Bed-plate adjustment for printing-presses.



J. COTTLE.

BED PLATE ADJUSTMENT FOR PRINTING PRESSES.

APPLIUATION FILED NOV. 8, 1911 1,056,696; Patented Mar.18,1913.

14/![7786686 In er? t0 7:

6 W154 JUAN our r/ (yZ VA W B 995/ 6. Wm 149,

COLUMBIA PLANOGRAPH co., WASHINGTON. n, c.

UNITED STATES PATENT OFFICE.

JOHN COTTLE, OF DES MOINES, IOWA, ASSIGNOR OF ONE-HALF TO F. V. HALLEN, OF DES MOINES, IOWA.

BED-PLATE ADJUSTMENT FOR- PRINTING-PRESSES.

Application filed November 8, 1911.

To all whom it may concern:

Be it known that 1, JOHN CoTTLn, a citizen of the United States, residing in Des Moines, county of Folk, and State of Iowa, have invented a new and useful Improvement in Bed-Plate Adjustments for Printing-Presses, of which the following is a specification.

The object of my invention is to provide a simple adjustment for a printing press so that quick and accurate adjustment may be made for running either light or heavy paper. By the method now employed this is a hard and particular job as the platen must be leveled each time a change is made and often requires from one to two hours time. By my improved means the adjustment can be made in a very short space of time, some demonstrations showing that ten seconds is sutlicient.

Hy invention consists of certain details of construction, hereinafter set forth, pointed out in my claims, and illustrated in the accompanying drawings in which Figure I shows a side elevation view of a printing press, fitted out with my device, a portion of the press being broken away to more clearly show the device; Fig. II shows a plan view of a portion of my device; and Fig. 111 shows a sectional view on the line III-JET.

Referring to the accompanying drawing the reference numeral 10 is used to indicate a bar mounted on a crank pin 11 in the gear wheel 12. In the operation of the press this pulls the bed plate 13 over against the platen 11-. The end of the bar 10 is secured to the bed plate 13 by means of a pin 15, eccentrically located on the end of the shaft 16. It will be noted that, from the construction shown, if the shaft- 16 is rotated it will virtually have the effect of lengthening or shortening the bar 10, and will bring the bed plate 18 closer to, or remove it farther away from, the platen 14:, as the case may be. Lever 17 has a link connection at its lower end with a crank shaft on which a bell crank 18 is mounted, the latter having connection with one end of a bell crank lever 19, the opposite end of which latter is connected by a rod 20 with shaft 16. As the bell crank 19 moves downwardly it brings the bed plate 13 into closer relation to the platen 14.

As the construction hereinbefore referred Specification of Letters Patent.

Patented Mar. 18,1913.

Serial No. 659,200.

to is of the customary or ordinary type, I have not entered into detail description thereof but have simply made reference to the parts as shown in the drawings and which would be easily understood by any one skilled in the art.

My invention is very simple and consists in providing an adjustable stop to prevent the outer arm of the bell crank 19 from going any lower than is desired, said attachment being adapted to be secured to any press of this type. The attachment con sists of the two side bars 21 and 22, similar in every respect, mounted to their respec tive sides of the frame and extending outwardly therefrom, carrying in their outward ends a shaft 23. Rigidly mounted on the shaft 23, by set screw 2 1, is a sector 25, provided with a curved slot 26.

The lever 27 is rotatably mounted on the shaft and is held in adjusted position thereon by the set screw 28 passing through a washer 29 and the slot 26, said set screw being threaded into the lever 27 By construction the parts are so arranged that the lever 27 assumes a position immediately below, and in line with, the outer arm of the bell crank 19, and the upturned inner end of said lever is designed to engage the under side of the said outer arm of the bell crank 19 thus providing a downward limit of movement for the said bell crank.

In practical operation the lever 27 is set at the desired place, thus limiting the downward movement of the bell crank 19. The lever 17 is then pulled backward which forces the bell crank lever against the upturned end of the lever 27. The position of the bed plate is determined by this operation, as the rod 20, controlled by the lever 17, can only move a certain distance (until the bell crank 19 comes in contact with the lever 27). Thus it is obvious that the position of the lever 27, and the operation of the lever 17, control the relationship between the bed plate and the platen. The throw off is not affected by the position of the lever 27 because it is a forward movement of the lever 17 which controls the throw off.

Having thus described my invention what I claim and desire to secure by Letters Patent of the United States, is:

1. In a printing press, in combination with a frame, the platen, the bed, an eccentrie (-onneetion between the platen and bed and means for operating said connection, an element rigidly eouneeted to the frame, a lever pivotally mounted between its ends on said element, the inner end o't said lever being tor engagementwith said operating 11103118, and means rigidly mounted on said element and having eoi'mection with said lever to loek the latter in its adjusted positions.

2. ln a printing nre S, in combination with the tran'ie. the platen, the bed, an e0 centric (-ouueetiou between the platen and bed. and means tor operating said connection, a substantially horizontal frame rigidly connected to the press frame, a Vertieally adjustable lever carried by said horizontal frame to engage said means to restrit't movement thereof and means to lock the lever in its adjusted position to said herizontal frame.

3.111 a printing press, in combination with the Frame, the platen, the bed, an eerentrie connection between the platen. and

bed, and means for operating said connection, a pair of horizontal. bars rigidly con neoted at their inner ends to Said frame, a transverse shat't connected to the outer ends ot said bars, a SGCtOl having a curved slot 39 adjnstably secured on said shaft, a lever i mounted on said shaft and having a part thereof for engagement with said means, and means extending through said slot to adjustably connect the lever to the sector. 35

4-, ln printing press, in combination. with. the frame, the platen, the bed, an eceentric connection between the platen and bed, and means for o ierating Said conneetioin, including a bell crank lever Vertically 40 int, 'able at one end, an adjusstable horizontal lever connected to the frame to engage said bell. crank to restrict the downward movement thereof and means to look the last named lerer in adjusted position.

JUHN COTTLE.

ll itnesises Fauna S'rnirzna, linemen Ron.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents. Washington, D. C. 

